Image search based on message history

A non-transitory computer readable medium programmed with instructions that, when executed by a processing system, perform operations, comprising:

• generating a transcript of a message session over a message service between a first client device and a second client device, the transcript of the message session generated by the first client device and the transcript based on one or more encrypted messages sent by the first client device and one or more messages encrypted by the second client device received by the first client device from the second client device, wherein the secure message service does not decrypt the encrypted messages of the first and second client devices;
• generating a plurality of keywords on the first client device, based at least in part on the transcript and at least in part on synonyms to one or more of the plurality of keywords, the synonyms obtained from an asset catalog on the first client device, the asset catalog comprising a plurality of content items, including graphical content items, at least some of the content items are not related to any of the plurality of keywords, wherein the asset catalog is periodically updated by a remote search engine with graphical content items or keywords are trending upward in popularity based on a number of times that the graphical content or keywords items have been accessed or shared, as determined by the remote search engine, and the first client device replaces the asset catalog with the updated catalog;
• retrieving one or more items of graphical content from the asset catalog using the plurality of keywords and the synonyms, wherein the one or more items of graphical content are filtered based upon filter criteria;
• presenting at least a subset of the one or more items of filtered graphical content to a user of the first client device, based at least in part on the plurality of keywords generated from the transcript and the synonyms from the asset catalog;
• and
• in response to the user of the first client device selecting one of the one or more items of filtered graphical content, sharing the selected item of graphical content in a message to the second client device.

A system comprising:

• a processing system coupled to a memory programmed with executable instructions that, when executed by the processing system perform operations, the operations comprising:
• generating a transcript of a message session over a message service between a first client device and a second client device, the transcript of the message session generated by the first client device and the transcript based on one or more encrypted messages sent by the first client device and one or more messages encrypted by the second client device received by the first client device from the second client device, wherein the message service does not decrypt the encrypted messages of the first and second client devices;
• generating a plurality of keywords on the first client device, based at least in part on the transcript and at least in part on synonyms to one or more of the plurality of keywords, the synonyms obtained from an asset catalog on the first client device, the asset catalog comprising a plurality of content items, including graphical content items, at least some of the content items are not related to any of the plurality of keywords, wherein the asset catalog is periodically updated by a remote search engine with graphical content items are trending upward in popularity based on a number of times that the graphical content items have been accessed or shared, as determined by the remote search engine;
• and the first client device replaces the asset catalog with the updated asset catalog;
• retrieving one or more items of graphical content from the asset catalog using the plurality of keywords and synonyms, wherein the one or more items of graphical content are filtered based upon filter criteria;
• presenting at least a subset of the one or more items of filtered graphical content to a user of the first client device, based at least in part on the plurality of keywords generated from the transcript and the synonyms from the asset catalog;
• and
• in response to the user of the first client device selecting one of the one or more items of filtered graphical content, sharing the selected item of graphical content in a message to the second client device.